H. Seismic DBE Simulation:

This testing is designed to simulate the conditions that would exist for a pipe-mounted valve as a result of dynamic response of the piping system during a safe shutdown earthquake. Elimination of the run-in oil and use of water as an o-ring assembly aid do not adversely affect valve response to this simulation. The Nicotef coating does not adversely affect the ability of the valve to function during the seismic simulation. This conclusion is supported by the supplemental wear aging testing discussed above which demonstrates that the Nicotef does not cause binding, failure to shift, unacceptable wear, or unacceptable seat leakage. These conclusions are also supported by the NS testing discussed in Appendix A

I. Radiation DBE Simulation:

This testing exposes the valve to levels of radiation that would exist during a design basis event. Elimination of the run-in oil and use of water as an o-ring assembly aid do not adversely affect valve response to this simulation. The Nicotef coating is a proprietary blend of nickel and Teflon. The nickel is unaffected by radiation. Teflon is a fluropolymer and is susceptible to radiation degradation; however, this degradation does not adversely affect the Teflon's ability to reduce sliding friction between the stem/disc and seat or the ability of the Nicotef to bond to the base. These conclusions are supported by the results of the NS testing discussed in Appendix A.

J. Environmental DBE Simulation:

This testing simulates the condition that would exist during a loss of coolant accident/high energy line break event and a post event cool down. Elimination of the run- in oil and use of water as an o-ring assembly aid do not adversely affect valve response to this simulation. The Nicotef coating is a proprietary blend of nickel and Teflon. The nickel is unaffected by the DBE conditions. Teflon is a high temperature fluropolymer. The ability of the Teflon to reduce sliding friction is not adversely affected by these DBE conditions. These conclusions are supported by the results of the NS testing discussed in Appendix A.